Answer: hardest

AnswerCrossword Clue
hardestrsh, severe, or offensive in tendency or effect said some hard things
hardestable as currency paid in hard cash
hardestee of weakness or defects
hardestose searching gave a hard look
hardesting high and firm hard prices
hardestst unyielding or thoroughgoing the hard political right
hardestor relating to radiation of relatively high penetrating power having high energy hard X rays
hardesting at once addictive and gravely detrimental to health such hard drugs as heroin
hardestdifficult
hardestee from sentimentality or illusion realistic good hard sense
hardestfirm to the touch; not soft
hardesting, schooled in, or using the methods of the natural sciences and especially of the physical sciences a hard scientist
hardestnot easily penetrated not easily yielding to pressure
hardestcorrigible tough a hard gang
hardest(of drinks) containing much alcohol
hardestharsh; severe
hardestHARD, firm and unyielding
hardest(of water) containing mineral salts that interfere with the action of soap
hardesttense in force, manner, or degree hard blows
hardestclement hard winter
HARDESTAdjective for diamond
HARDEST10, on the Mohs scale
HARDESTMost demanding
HARDESTMost difficult
HARDESTAdjective for a diamond.
HARDESTLike diamond.
HARDESTMost laborious.
HARDESTSteeliest.
HARDESTMost adamant
HARDESTMost unyielding
HARDESTAt the top of the Mohs scale
HARDESTMost arduous
HARDESTLike diamond, on the Mohs scale
HARDESTMost effortful
HARDESTLeast malleable
HARDESTThe most difficult
HARDESTMohs scale meaning of 10
HARDESTAdjective for diamonds
HARDESTRating a 10 on the Mohs scale
hardest(of drugs) addictive